This story really keeps you interested and on the edge of your seat from start to finish!! The cover is extremely gorgeous and definitely pulls you in!! One thing I really liked when reading this story was how the chapters seem to bounce from one sister to another. Like two POVs. I think that helps keep you guessing and wanting more of each. I also liked how one sister had chapters written in slashes and the others chapters used numbers. Plus the inside front cover and inside back cover had some gorgeous artwork as well!! This story definitely has some action, suspense and mystery. It's also sci-fi. Talking about a new kind of electronic sounding earth. The troubles these two sisters have to go through to find each other is crazy but I think it helps them become closer and learn more about each other. It is definitely a story that is very hard to put down!!